Henry e



(No Model.)

H. E. DORMAN.

SASH BALANCE. No. 321,284, Patented June 30, 1885.

UNITED STATES PATENT @rrrcn,

HENRY E. DORMAN, OF WORCESTER, MASSACHUSETTS, ASSIGNOR, BY DIRECT AND MESNE- ASSIGNMENTS, OF A PART TO AMOS K. ROBERTS AND JOHN L. TUTTLE, BOTH OF SAME PLACE.

SASH-BALANCE.

SPE GIFICATIDN forming part of Letters Patent No. 321,284, dated June 30, 1885.

Application filed November 24, 1884.

To all 1072 0772, it may concern:

Be it known that l, HENRY E. DOB-MAN, of the city and county of Worcester, in the Commonwealth of Massachusetts, have invented certain new and useful Improvements in Window Sash Lifters and Fasteners; and I' do hereby declare the following to be a full,clear, and exact description of the invention, such as will enable others skilled in the art to make and use the same, reference being had to the accompanying drawings, which form a part of this specification, and to the letters of reference marked thereon.

The object of this invention is to provide a :5 more convenient, durable, and practical litter and fastener than any new in use, and adapted to all kinds of window-sash to be raised and lowered.

My device consists of the combination, with the window frame and sash, of the square spindle, of a suitable length for any thickness of the window-frame, and provided with a knob or crank on the end, the other end in sorted in the square hole in the round hub of 2 5 a toothed fastening-wheel having its bearings in a holder provided with a straddle or straight latch pivoted to its face so as to drop into the toothed notches. Said holder is fastened to the face of the window casing or frame by 0 screws. Said spindle is also inserted in the square hole in the round hub of a geared wheel, said hub having bearings at each end in a double holder set in the frame and fastened with screws to the jamb of the frame, so

that the geared wheel can revolve in the holder and gear into a straight rack-gear fastened in the edge of the sash. There is an anti-friction roll mounted in the end of a flat steel spring, which is fitted in and fastened to o the upper opposite corner of the sash, which serves to relieve and balance the sash, so it will not cramp when it is raised and lowered.

Referring to the drawings, Figure 1 represents a side view of the frame and sash, showing my device attached thereto. Fig. 2 represents the device with the'knob and spindle removed,showing the toothed fastening-wheel, its round hub with its square hole, and the holder provided with the straddle-latch pivoted to its face and fastened to the face of the casing or frame. Fig. 3 represents an inner edge view of the frame, showing a side view of my device. Fig. 4 represents a sectional (N0 model.)

side view of my device inserted in the window-frame, showing the position of the several parts. Fig. 5 represents an edge view of the window-sash, showing the straight rackgear fitted therein. Fig. 6 representsthe opposite edge of the sash, showing the anti- ,friction roll mounted in the flat steel spring 5 and fastened to the upper corner of the sash. Fig. 7 represents an edge view of the same and a side view of the sash. Fig. 8 represents the geared lifting-wheel having a square hole in the round hub having its bearings in the two cars of the holder, the teeth projecting through the face-plate of the holder, so as to gear into the rack-gear fastened to the edge of the sash.

Similar letters refer to similar parts throughout the several views.

A denotes the window-frame, and B the sash. C denotes the toothed fastening-wheel with its round hub D, and the square hole in the same. F denotes a straddle-latch pivoted to the holder G, at f, so that it will latch into the toothed wheel in either direction; or a straight bolt may be used in its stead, if desired. H denotes the geared lifting-wheel with its round hub L and square hole D, mounted in the holder 1. I, so as to gear into the rack-gear K of the sash B. The flat spring M is fastened in a notch at the upper corner of the sash B, and provided with an anti-friction roll, N, mounted on pivot 0. The knob 8 R serves as a handle to the spindle P; but a crank may be substituted, if desired. The clasp J holds the device to the edge of the frame.

Having thus fully shown and described my invention, what I claim, and desire to secure by Letters Patent, is-

The combination, with the rack-bar K, the holder I, and the cog-wheel H, having hubs on its opposite faces journaled in the holder 95 I, of the shank P, fitting in an angular hole through the hub of wheel H, a plate, G, carrying a latch, F, and a toothed wheel, 0, fitting around shank P, and formed with a rounded hub turning in plate G, substantially too as described.

November 20, 1884.

HENRY E. DORMAN.

Witnesses:

Minion H. Cowman, J 01m. LUTHER. 

